Rectangular funnel



FIG. 1 is a perspective view showing our original design for a funnel;

FIG. 2 is a side elevation view thereof, the opposite side being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation view thereof, the opposite side being a mirror image; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for a rectangular funnel, as shown and described. 